Supercontinuum Generation in Atmospheric-Pressure Nitrogen Using a Tightly Focused Intense Femtosecond Laser Beam

作     者：QIN Yuan-Dong ZHU Chang-Jun YANG Hong GONG Qi-Huang 秦元东;朱长军;杨宏;龚旗煌

作者机构：Department of PhysicsMesoscopic Physics LaboratoryPeking UniversityBeijing 100871 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2000年第17卷第6期

页      面：413-415页

核心收录：

学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程] 

基　　金：Supported by the National Climbing Project of China and the National Natural Science Foundation of China under Grant Nos 19884001 and 19525412 

主　　题：Focus pulse Femto 

摘      要：Supercontinuum generation in atmospheric-pressure nitrogen by a focused intense femtosecond Ti:sapphire laser was studied at various pulse durations and *** generated supercontinuum was greatly blue-broadened due to self-phase modulation in the plasma *** measured blue-broadening△ωis proportional to pulse intensity for fixed pulse duration,and values up to 0.7ω(ωbeing the originaI laser frequency)was obtained with a pulse energy of 9.5 mJ and minimum duration of 100 fs.